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Engine restoration

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Grimreaper
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Posts: 61
Joined: 4th Jan 2018
Location: Morsy

Engine restoration

#1 PostAuthor: Grimreaper » Mon Jan 07, 2019 8:55 pm

Hi folks, just bought a z900 1976 and was wondering what to use to bring up the engine block without removing it ? I'm my day it was just autosol and elbow grease . Any advice welcome as I canna afford vapour blasting and such like . Cheers Mike

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Ultim8pc
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Location: Keighley, West yorkshire
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Re: Engine restoration

#2 PostAuthor: Ultim8pc » Mon Jan 07, 2019 10:38 pm

I recommend giving it a good de-grease with something like Jizer and then a good soapy wash.

The buy some 'Mothers' and use a toothbrush and/or small paint brush with short bristles to rub it into the metal. Do it in 3 inch square blocks. Leave it on for 10 minutes, the brush it again and then use a cloth to remove.
Brings it up all pretty good.
I've done this on my last few 900s and it has worked well:
https://www.facebook.com/pg/airevalleyclassics/photos/?tab=album&album_id=428241284309976
http://www.airevalleyclassics.co.uk
10% discount code Z1OCTEN
Keyster rebuild kits & carburettor spares - airscrews, jets, needles, starter plungers & gaskets.
Also petrol/ethanol proof float bowl gaskets. IMD pistons preferred seller.

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Garry.L
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Re: Engine restoration

#3 PostAuthor: Garry.L » Tue Jan 08, 2019 2:52 am

Putoline Chain & engine degreaser (expensive BUT it works) then a scotch pad, a tube of Autosol and a very large tub of elbow grease..... then get rubbing.
Wrap the pad around a flat blade screwdriver to get into the fins.

download (1).png
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An old Z1B I used to own.

Before

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Z1077 (1).jpg (101.2 KiB) Viewed 2037 times


After....

Z1079.jpg
Z1079.jpg (192.4 KiB) Viewed 2037 times


As said, it takes lots of time and effort. Also, having no life what-so-ever helps as well.
ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ

guzziman56
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Joined: 27th Feb 2015
Location: Dorset

Re: Engine restoration

#4 PostAuthor: guzziman56 » Tue Jan 08, 2019 6:10 am

Also, having no life what-so-ever helps as well.

That's the second time in two days you've made me laugh Garry.L... and my 9 year old son loves your gif image. 'Look at that dad!'
More to the point, very impressive polishing. I'll try and get my KZ1000 engine to look somewhere near the same.
R
1976 KZ1000A1, 1981 KZ1100 Shaft+Steib TR500 sidecar (ongoing), 1942 Motoguzzi 600U, 1948 Moto Guzzi GTV, 1952 Moto Guzzi Ercole (in bits), 1953 Nimbus, 1986 Moto Guzzi V65 Lario (in need of TLC), 1988 Moto Guzzi Mk V Le Mans

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Ultim8pc
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Re: Engine restoration

#5 PostAuthor: Ultim8pc » Tue Jan 08, 2019 11:06 am

Excellent results Garry.
Point of note: Mothers is not just an abrasive paste (like Solvol) it's got some chemicals in it which help to eat away the grime. So you can get good results without having to resort to wire wool as well.
http://www.airevalleyclassics.co.uk
10% discount code Z1OCTEN
Keyster rebuild kits & carburettor spares - airscrews, jets, needles, starter plungers & gaskets.
Also petrol/ethanol proof float bowl gaskets. IMD pistons preferred seller.

Grimreaper
Regular Poster
Posts: 61
Joined: 4th Jan 2018
Location: Morsy

Re: Engine restoration

#6 PostAuthor: Grimreaper » Tue Jan 08, 2019 5:34 pm

Thanks for the help boys. Are you telling me Gary those cases are not chromed ? Superb :D By the way what paint do you use to paint in around the DOHC ? Cheers Mike


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